Secrecy and Resilience in Next-Gen Wi-Fi: Exploring a Multi-User Down-Link Non-Orthogonal Transmission Framework

Next-generation Wi-Fi communication necessitates improved spectral efficiency, low latency, expanded coverage, robustness, and enhanced communication security. A major challenge in current and future Wi-Fi communication is preventing eavesdroppers from intercepting live transmissions and ensuring enhanced communication secrecy. The non-orthogonal multiple access (NOMA) scheme has emerged as a potential candidate for future Wi-Fi communication. This is attributed to its notable characteristic of serving multiple users simultaneously on the same time/frequency resources. In this work, my motivation is to propose a novel NOMA transmission scheme that can serve multiple users without any information leakage to an internal or external eavesdropper. My proposed NOMA transmission scheme utilizes physical layer security (PHY) and is less complex, more efficient, and more robust than the conventional power domain NOMA (PD-NOMA) transmission. PD-NOMA suffers from various drawbacks, such as the use of successive interference cancellation (SIC), which demands power sharing among users and has a high probability of information leakage